Guys im using now the Apple Safari 3 browser it is totally amazing and fast .u can check it and download for free and it is compatible on both Mac OS X and XP and Vista..
www.apple.com/safari/ enjoy....the file size is 8MB...the interface is so amazing and one can change anything and theres enough plug-ins that are satisfying
*The fastest web browser on any platform, Safari loads pages up to 2 times faster than Internet Explorer 7 and up to 1.6 times faster than Firefox 2.
And it executes JavaScript up to 2.8 times faster than Internet Explorer 7 and up to 1.6 times faster than Firefox 2.*
*
www.apple.com/safari/